Since 1999, CWNP has been at the forefront of IT certification and the industry standard for vendor-neutral Enterprise Wi-Fi certification and training. Unfortunately only half of the MAC addresses in this 24-bit prefix can be used for multicast, this means we only have 23 bits of MAC address space to use for multicast. The 24-bit MAC address prefix 01-00-5E is reserved for layer 2 multicast.
SMAC is a powerful, yet an easy-to-use and intuitive Windows MAC Address Modifying Utility (MAC Address spoofing) which allows users to change MAC address for almost any Network Interface Cards (NIC) on the Windows 10, 8, 7, 2008, VISTA, XP, 2003, and 2000 systems, regardless of whether the manufacturers allow this option or not.